10 20
0 1 1 1
1 1 10
0 2 2 2
1 1 10
0 3 3 3
1 1 10
0 4 4 4
1 1 10
0 5 5 5
1 1 10
0 6 6 6
1 1 10
0 7 7 7
1 1 10
0 8 8 8
1 1 10
0 9 9 9
1 1 10
0 10 10 10
1 1 10